source: branches/2994-AutoDiffForIntervals/HeuristicLab.Encodings.RealVectorEncoding/3.3/Moves/AdditiveMoveTabuChecker.cs @ 17209

Last change on this file since 17209 was 17209, checked in by gkronber, 5 weeks ago

#2994: merged r17132:17198 from trunk to branch

File size: 5.1 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using HeuristicLab.Common;
24using HeuristicLab.Core;
25using HeuristicLab.Data;
26using HeuristicLab.Operators;
27using HeuristicLab.Optimization;
28using HeuristicLab.Parameters;
29using HEAL.Attic;
30
31namespace HeuristicLab.Encodings.RealVectorEncoding {
32  [Item("AdditiveMoveTabuChecker", "Prevents falling back into ranges that have been moved over before.")]
33  [StorableType("CA7D09FF-C936-474C-A0F8-17D9DBF783C2")]
34  public class AdditiveMoveTabuChecker : SingleSuccessorOperator, IAdditiveRealVectorMoveOperator, ITabuChecker {
35    public override bool CanChangeName {
36      get { return false; }
37    }
38    public ILookupParameter<AdditiveMove> AdditiveMoveParameter {
39      get { return (LookupParameter<AdditiveMove>)Parameters["AdditiveMove"]; }
40    }
41    public ILookupParameter<RealVector> RealVectorParameter {
42      get { return (LookupParameter<RealVector>)Parameters["RealVector"]; }
43    }
44    public ILookupParameter<ItemList<IItem>> TabuListParameter {
45      get { return (ILookupParameter<ItemList<IItem>>)Parameters["TabuList"]; }
46    }
47    public ILookupParameter<BoolValue> MoveTabuParameter {
48      get { return (ILookupParameter<BoolValue>)Parameters["MoveTabu"]; }
49    }
50    public IValueLookupParameter<BoolValue> MaximizationParameter {
51      get { return (IValueLookupParameter<BoolValue>)Parameters["Maximization"]; }
52    }
53    public ILookupParameter<DoubleValue> MoveQualityParameter {
54      get { return (ILookupParameter<DoubleValue>)Parameters["MoveQuality"]; }
55    }
56    public ValueParameter<BoolValue> UseAspirationCriterionParameter {
57      get { return (ValueParameter<BoolValue>)Parameters["UseAspirationCriterion"]; }
58    }
59
60    public BoolValue UseAspirationCriterion {
61      get { return UseAspirationCriterionParameter.Value; }
62      set { UseAspirationCriterionParameter.Value = value; }
63    }
64
65    [StorableConstructor]
66    protected AdditiveMoveTabuChecker(StorableConstructorFlag _) : base(_) { }
67    protected AdditiveMoveTabuChecker(AdditiveMoveTabuChecker original, Cloner cloner) : base(original, cloner) { }
68    public AdditiveMoveTabuChecker()
69      : base() {
70      Parameters.Add(new LookupParameter<AdditiveMove>("AdditiveMove", "The move to evaluate."));
71      Parameters.Add(new LookupParameter<BoolValue>("MoveTabu", "The variable to store if a move was tabu."));
72      Parameters.Add(new LookupParameter<RealVector>("RealVector", "The solution as real vector."));
73      Parameters.Add(new LookupParameter<ItemList<IItem>>("TabuList", "The tabu list."));
74      Parameters.Add(new ValueParameter<BoolValue>("UseAspirationCriterion", "Whether to use the aspiration criterion or not.", new BoolValue(true)));
75      Parameters.Add(new ValueLookupParameter<BoolValue>("Maximization", "True if the problem is a maximization problem, else if it is a minimization problem."));
76      Parameters.Add(new LookupParameter<DoubleValue>("MoveQuality", "The quality of the current move."));
77    }
78
79    public override IDeepCloneable Clone(Cloner cloner) {
80      return new AdditiveMoveTabuChecker(this, cloner);
81    }
82
83    public override IOperation Apply() {
84      ItemList<IItem> tabuList = TabuListParameter.ActualValue;
85      AdditiveMove move = AdditiveMoveParameter.ActualValue;
86      RealVector vector = RealVectorParameter.ActualValue;
87      double moveQuality = MoveQualityParameter.ActualValue.Value;
88      bool maximization = MaximizationParameter.ActualValue.Value;
89      bool useAspiration = UseAspirationCriterion.Value;
90      bool isTabu = false;
91      foreach (IItem tabuMove in tabuList) {
92        AdditiveMoveTabuAttribute attribute = (tabuMove as AdditiveMoveTabuAttribute);
93        if (attribute != null && attribute.Dimension == move.Dimension) {
94          if (!useAspiration
95            || maximization && moveQuality <= attribute.MoveQuality
96            || !maximization && moveQuality >= attribute.MoveQuality) {
97
98            double newPos = vector[move.Dimension] + move.MoveDistance;
99            if (Math.Min(attribute.MovedPosition, attribute.OriginalPosition) < newPos
100              && newPos < Math.Max(attribute.MovedPosition, attribute.OriginalPosition)) {
101              isTabu = true;
102              break;
103            }
104          }
105        }
106      }
107      MoveTabuParameter.ActualValue = new BoolValue(isTabu);
108      return base.Apply();
109    }
110  }
111}
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